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United States Patent | 5,227,843 |
Yamamoto ,   et al. | July 13, 1993 |
A detachable imaging unit is provided in an image forming device. The detachable unit includes an image bearing member, one of a pair of registration rollers and a developing device. A relative position between the image bearing member and the one of the pair of registration rollers is provided so as to permit precise transport of a recording sheet against the image bearing member.
Inventors: | Yamamoto; Shunji (Osaka, JP); Saijo; Hiromitsu (Osaka, JP); Tokura; Yukio (Osaka, JP); Hayashi; Hideji (Osaka, JP) |
Assignee: | Minolta Camera Kabushiki Kaisha (Osaka, JP) |
Appl. No.: | 549150 |
Filed: | July 6, 1990 |
Jul 07, 1989[JP] | 1-176018 |
Current U.S. Class: | 399/111; 399/124 |
Intern'l Class: | G03G 015/00 |
Field of Search: | 355/200,210,211,212,317 |
4254202 | Mar., 1981 | Matsumoto et al. | 430/120. |
4609276 | Sep., 1986 | Mitzutani | 355/210. |
4702587 | Oct., 1987 | Miyoshi | 355/200. |
4769669 | Sep., 1988 | Watanabe | 355/200. |
4806968 | Feb., 1989 | Watanabe et al. | 355/200. |
4896191 | Jan., 1990 | Ohyabu et al. | 355/309. |
Foreign Patent Documents | |||
57-139764 | Aug., 1972 | JP. |